Synonyms for Slot (same or very similar meaning)
WordNet sense 1 (a time assigned on a schedule or agenda):
time slotWordNet sense 2 ((computer) a socket in a microcomputer that will accept a plug-in circuit board):
expansion slotWordNet sense 3 (a slot machine that is used for gambling):
one-armed banditFrom the ODE community, based on WordNetadd/edit